So Sayonara Umihara Kawase has 2 VR-related options: one for "scale" which you can switch between diorama-sized and full scale. And another which changes the way the camera position tracks the player (either directly only moving when required).
As far as I can tell, the entire game is playable in VR (using a traditional controller of course).
I took some SteamVR screenshots which came out at a ridiculously tiny resolution:
Diorama mode:
Full scale mode:
(Obviously, the scale difference is much more apparent in VR. Also, don't mind the aspect ratio of these shots, it's correct in the HMD)
I think it renders at a higher resolution. Still not particularly high though, I have to look at it in more depth.